#include<stdlib.h>

struct ListNode
{
    int val;
    struct ListNode* next;
};


int main()
{
    struct ListNode* n1 = (struct ListNode*)malloc(sizeof(struct ListNode));
    struct ListNode* n2 = (struct ListNode*)malloc(sizeof(struct ListNode));
    struct ListNode* n3 = (struct ListNode*)malloc(sizeof(struct ListNode));
    struct ListNode* n4 = (struct ListNode*)malloc(sizeof(struct ListNode));
    n1->val = 1;
    n2->val = 2;
    n3->val = 3;
    n4->val = 4;

    n1->next = n2;
    n2->next = n3;
    n3->next = n4;
    n4->next = NULL;
}

struct ListNode* removeElements(struct ListNode* head, int val)
{

}
